Appliance Repair Questions? Ask a Technician for Answers ASAP
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Per your question, you will need to do this. Remove the top of your machine to gain access to the timer. It is this part that tells the door to open when the cycle is complete. With a voltage meter, see if you have any voltage going to the lock. At the start of the cycle. Then move the timer to the end of the cycle where the door should be opening. Whatever you metered out at the start of the cycle, you should have the opposite at the end. If you do, then the lock is bad. If not then the timer is bad. Bosch has two types of locks. One requiring voltage to keep it closed, and one that don't. If you have any other questions please ask. I wish you the best.